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CORE OF THE PROBLEM?

Ed Johnson-Williams, who specialises in digital security, told The Sun Online that Facebook tracks your location to help advertisers connect to people who are in a specific area.

Smartphone phones can discover your whereabouts by working out your position in relation to mobile masts.

He said: “They also have GPS inside the phone and that makes data available to apps. It is sensitive data a lot of the time and people should be aware of the tracking.”

How to stop Facebook from tracking you for iPhone users

Open the Facebook app on your iPhone

Tap on “More” in the bottom-right corner of your navigation

Select “Account Settings”

Select “Location”

Finally, tap on the “Off” option for “Location History”

For example, it's claimed that Facebook could know your location even when you are not using the app.

Johnson-Williams added: “I would not be surprised if they were doing that. You can easily check into a place and when Facebook asks for your permission to use your location you end up giving it other permissions as well.”